Tunable multilayer fabry-perot resonator using electro-optical defect layer

Using electro-optical defect layer, lithium niobate (LiNbO₃), in a one-dimensional quarter-wave photonic crystal, a theoretical analysis of the tunable resonance in near infrared region for a multilayer Fabry-Perot resonator (FPR) is given. With the fact that the refractive index of LiNbO₃ is voltage-dependent, tunable optical resonant properties have been investigated based on the calculated wavelength-dependent transmittance spectrum. The resonant peak wavelength as a function of applied voltage is numerically illustrated. Additionally, the angle-dependent resonant peak positions for both TE and TM waves are also examined.